GRP Pipes

The main raw materials used in the manufacturing of GRP pipes are polyester resin, glass fiber reinforcements and sand. The standard length of GRP pipes is 12 m; however, it is possible to manufacture pipes with different lengths from 0.3 m to 15 m according to requirements of the customers. Pipes are manufactured within a nominal diameter (DN) range from 100 mm to 4000 mm, a nominal pressure (PN) range from 1 Bar to 32 Bars and nominal stiffness (SN) classes of SN 2500 N/m2, SN 5000 N/m2 and SN 10000 N/m2. Also all kinds of GRP fittings such as elbows, T pieces, reducers and flanges and provides a complete system solution. Also includes GRP tanks as well for water, wastewater, fuel and other fluids.

All GRP products are carried out in accordance with national and international standards. All GRP pipes and fittings are designed and manufactured in accordance with AWWA C 950 standard and also meet the requirements of the relevant standards by ASTM, BS, DIN, EN, ISO and Turkish TSE.

All GRP pipes have to pass the following tests carried out in compliance with the above-mentioned standards:

  • Hydrostatic leak tightness test to twice rated pressure
  • Stiffness
  • Barcol hardness
  • Dimensional tolerances
  • Axial and circumferential strength

The superior properties of GRP pipes in comparison to the other types of pipes are as follows:

  • Service life is longer. GRP pipes are designed and produced for a minimum service life of 50 years.
  • GRP pipes are not affected by corrosion. Since corrosion is not a problem, there is no need for coating, lining, cathodic protection or other forms of corrosion protection.
  • Mechanical strength is high and they have elastic properties.
  • GRP pipes are healthy and environmentally friendly.
  • They have perfect hydraulic characteristics (Hazen – Williams coefficient is C= 150).
  • Operating and maintenance costs are low.
  • Can be produced according to the required technical properties to meet the specifications of different projects.
  • GRP pipes are light-weight (1 / 4 weight of steel and 1 / 10 weight of concrete pipes).
  • Coupling joints with REKA type EPDM gaskets are easy to install and ensure total leak- tightness.
  • GRP pipes provide speed and savings during realization of the projects.

GRP pipes are widely used for:

  • Water transmission and distribution (potable and raw water)
  • Gravity & pressure sewer lines
  • Irrigation
  • Storm sewers
  • Sea water intake and outfalls
  • Circulating water, make-up and blowdown lines for power plants
  • Hydroelectric penstock lines
  • Industrial applications

GRP products can be installed in every environment, namely:

  • Underground
  • Underwater
  • Above ground